Improvement in pneumatic oilers



- 2 Sheets--Sheet DECKER.

Patented August12,1873.

Pneumatic Di'ler.

.iii

ILv

j W Y.

2 Sheets--Sheet 2.

C. E. DECKER.

Pneumatic Oiler.

Patented August12, 1873.

AM. PH@ T0-L/7H0GHAPH/c ca Nx (assen/EL" mack-sw UNITED .STATES CHARLES E. DECKER, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN PNEUMATIC OILERS.

Specification forming part of Letters Patent No. 141,703, dated August 12, 1873; application tiled November 29, 1872.

To all whom it may concern:

Be it known that I, CHARLES E. DECKER, of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Pneumatic Oilers, of which the following is a specification:

This invention relates to an automatic oiler to be applied to journals and bearings in machinery to furnish them with a constant and regulated supply of oil. A glass capsule contains the oil, and is fitted at its lower part with a discharge or drip tube to feed the lubricating matter to the bearing. The capsule is made air-tight, except at the drip and at one other point, where a regulating or cutoif valve governs the admission of a limited amount of air to the interior. The oil will iiow out in drops, just in proportion t0 the amount of air admitted to supply its place, acting upon a well-known principle in hydraulics. By this construction the discharge-tube may be made so large as to obviate all danger ofbecoming clogged, and yet the flow be regulated, even to allowing so small an amount as one drop of oil in two minutes, and less even than that. The rst part of the invention consists in this method of regulating the flow of oil from the oiler by governing the amount of air admitted to the capsule. The second part of the invention relates to the construction and arrangement of the several parts, as will be hereinafter more fully explained.

In the accompanying drawings, which form a part of this specification, Figure 1 represents a central vertical section of an oiler embodyin g this invention. Fig. 2 is a horizontal section of the same oiler taken at the line .fr a.' of Fig. l, looking toward the bottom. Fig. 3 is a vertical central section of a modification of the invention, showing another way of introducing the air.

Like letters of reference made use of in the several figures indicate like parts.

To enable those skilled in the art to make and use this invention, I will proceed to describe the same with particularity, making use, in so doing, of the aforesaid drawings by letters of reference thereto.

A represents the glass capsule, fitted at the bottom with a tube, B, which is enlarged into the ilange b, into which is placed a ring of packing, c. `The tube B, beyond this part, extends up into the capsule through the lower aperture thereof, and the extension is made with a screw-thread, as at .11', to engage a crowfoot nut, D, to hold the capsule and tube together against the packing. This crow-foot nut D is so made with arms to enable it to pass through the aperture into the capsule. At the upper end of the capsule, in the aperture, a second'tube or bushing, E, is secured by means of a crow-foot device, D. Into the upper end of this tubeE is screwed a valve-seat, F, having a screw-regulated cut-off valve, Gr, to govern the admission of air, which enters through the channel-way g. To prevent the access of particles of dust and foreign matter to this small channel, which might clog it up, an outside jacket or passage way, H, surrounds the valve-seat, and opens exteriorly at a point, h, opposite the channel g, so that the air entering the aperture h must traverse the length of the passage before reaching the channel g, and will be likely to deposit any dust or matter in the passage, which is made so large that it will not itself readily clog. To the bottom of the valve-seat F is attached the air-pipe K, which descends nearly to the bottom of the capsule, and bends upward a little distance, so as to discharge the air-bubbles clear of itself, and in a manner to be readily seen by the operator, who may watch for them to ascertain if the oiler is properly feeding 5 and be it remarked that the entrance ot'4 these air-bubbles, caused by the air passing through the oil, is a certain indication that the oil is properly iowing from the discharge tube, so that the fact of the device working or failing to work may be readily ascertained without unscrewing and removing it from the machinery. To the bottom of the air-pipe K is soldered or secured a rod, L, which is usually a wire. This wire passes down through the tube B, and is attached to a ball, M, at the projecting end.

When the capsule is to be lled with-oil the valve-seat F is unscrewed and lifted up to disclose the aperture, lifting at the same time the air-pipe K and the rod or wire L, and bringing the ball M close up against the conical countersunk recess m at the bottom ot' the tube B, thus closing the said tube, and

PATENT OFFICE.

preventing,` the escape of oil therefrom while filling. When the valve-seat is replaced the ball is lowered thereby, but the oil is Withheld from flowing out by atmospheric pressure, and will only flow when air is admitted by Way of pipe K.

This oiler may be perfectly adjusted to allow any desired feed, and from its construction is always sure to Work regularly and not to clog.

Having thus fully described the construction and operation of my invention, that which I deem new, and desire to secure by Letters Patent, is-

1. In combination with a self-feeding oiler, a valve device for admitting a regulated quantity of air to the oil to govern the flow, substantially as specified.

pose specified.

CHARLES E. DECKER.

Witnesses:

HEINRICH F. BRUNs, JOHN W. MUNDAY. 

